rot¶
Performs rotation of points in the plane.
Description¶
Given two vectors x
and y
of n
elements, the rot
routines
compute four scalar-vector products and update the input vectors with
the sum of two of these scalar-vector products as follow:
API¶
Syntax¶
void rot(queue &exec_queue,
std::int64_t n,
buffer<T,1> &x,
std::int64_t incx,
buffer<T,1> &y,
std::int64_t incy,
T_scalar c,
T_scalar s)
rot
supports the following precisions and devices.
T |
T_scalar |
Devices Supported |
---|---|---|
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
Input Parameters¶
- exec_queue
The queue where the routine should be executed.
- n
Number of elements in vector
x
.- x
Buffer holding input vector
x
. The buffer must be of size at least (1 + (n
- 1)*abs(incx
)). See Matrix Storage for more details.- incx
Stride of vector x.
- y
Buffer holding input vector
y
. The buffer must be of size at least (1 + (n
- 1)*abs(incy
)). See Matrix Storage for more details.- incy
Stride of vector y.
- c
Scaling factor.
- s
Scaling factor.
Output Parameters¶
- x
Buffer holding updated buffer
x
.- y
Buffer holding updated buffer
y
.